Knowledge base
In-depth, curated explanations — read one anytime.
17 guides across 7 categories
A repeatable system for learning technical skills that actually stick — spaced repetition, projects, notes, and avoiding tutorial hell.
Updated 2026-07-10
The complete OSI reference — every layer, its protocols, devices, headers, addressing, security, and how it maps to TCP/IP. One page, everything.
Updated 2026-06-17
The two transport protocols compared in full — how each works, when to use which, headers, reliability, security, and where QUIC/HTTP-3 fits.
Updated 2026-06-17
The 4-layer model the internet actually runs on — each layer, its protocols, how it maps to OSI, encapsulation, a real web request, and why it beat OSI.
Updated 2026-06-17
Stuck and can't solve even one problem? This is the gentle, from-zero guide to how problem solving actually works — solve by hand first, then code. A ~22 minute read.
Updated 2026-06-17
The complete beginner journey, explained gently and in full — decisions, loops, functions, recursion, every data structure, and the core algorithms. Read it over several sittings.
Updated 2026-06-17
How to actually solve programming problems — the process, every pattern and when to use it, complexity, data structures, worked examples, and how to get good.
Updated 2026-06-17
A hands-on path through DSA: learn a pattern, solve real LeetCode problems with built-in Hint 1 / Hint 2 / Approach drop-downs, then the next pattern. A ~40 minute read + a lot of practice.
Updated 2026-06-17
The full C lab notebook in one place — every classic program (Part A, B and C) with code, how it works, and sample output, plus a quick reference for I/O and operators.
Updated 2026-06-17
Python from scratch — every fundamental explained clearly, building up to solving real problems, with links to the Problem Solving patterns and complexity.
Updated 2026-06-17
A sensible way to lay out a codebase — folders by feature, separating concerns, config, naming, and structure that scales as the project grows.
Updated 2026-07-09
Debugging as a repeatable method, not luck — reproduce, isolate, form hypotheses, read the error, bisect, and the tools that make it faster.
Updated 2026-07-13
Building UIs that stay maintainable — component boundaries, state, consistency, accessibility, and design decisions your future self will thank you for.
Updated 2026-07-06
Git from first principles — the mental model, the everyday commands, branching, merging, undoing mistakes, and a sane workflow.
Updated 2026-07-12
The Linux a developer actually uses daily — the shell, files and permissions, processes, pipes, and the commands worth memorizing.
Updated 2026-07-08
